Imperial College London


Faculty of MedicineDepartment of Brain Sciences

Honorary Clinical Senior Lecturer



+44 (0)20 3311 7042b.seemungal




Miss Lorna Stevenson +44 (0)20 3313 5525




10L17Lab BlockCharing Cross Campus






Barry Seemungal is a neurologist expert in brain conditions that affect balance and spatial orientation and since Nov 2020 is head of the Neuro-Otology Unit at Imperial College London. He obtained his PhD in Vestibular Neurosciences from UCL (IoN). His postdoctoral training at Imperial was funded by an Academy of Medical Sciences and Health Foundation Clinician Scientist Fellowship. He is also a Health Foundation Leadership alumnus.


His research group combines sophisticated vestibular function testing and advanced brain imaging to investigate the effect of brain disease upon imbalance and spatial orientation.

He is also involved in national and international committees that publish guidelines and diagnostic criteria for neurological and vestibular conditions including the Association of British Neurologists (Acute Neurology Advisory Group), Royal College of Physicians (Joint Clinical Neurosciences Committee)  and The Bárány Society (Classification OverSight Committee).

JUST OUT: Vestibular agnosia in traumatic brain injury and its link to imbalance. Calzolari et al. Brain 2020.



Dr Elena Calzolari: Post-Doctoral Research Associate

Ms Mariya Chepisheva: Doctoral research student

Ms Agnese Grison: Post-graduate Research Assistant

Mr Zaeem Hadi: Post-graduate Research Assistant

Dr Mo Mahmud: Doctoral Clinical Research Fellow

Ms Yuscah Pondeca: Post-graduate Research Assistant

Dr Heiko Rust: Consultant Neurologist and Senior Research Associate

Ms Rebecca Smith: NIHR Clinical (Physiotherapy) Doctoral Research Fellow

current projects

- A Imperial Health Charity project to develop remote assessment of acute stroke with vertigo (ReActiVe study). Position available in 2021.

- An MRC-funded project (contact: Dr Elena Calzolari) to assess the brain mechanisms of imbalance in Traumatic Brain Injury 'TBI' (MRC);

- JP Moulton Charitable Foundation grant with Dr Yen Tai to complement our MRC CARP (see below).

- A US Dep't of Defense project (contact: Dr Mo Mahmud) - in collaboration with colleagues from the US (Mayo clinic) and Rome (Tor Vergata) - to assess the factors impairing recovery from mild TBI;

- An NIHR Doctoral Fellowship (for Rebecca Smith) to assess the barriers to treating a common inner ear problem in TBI (called 'BPPV');

- An MRC-funded Clinical Academic Research Partnership (CARP) study with Dr Yen Tai, to trial the effect of spinal cord stimulation upon balance and falls in Parkinson's Disease patients;

- Pilot study (local funding) in balance and spatial orientation in dementia patients (contact: Ms Mariya Chepisheva).

- A Racing Foundation-funded study to develop automated diagnostics for concussion detection (contacts: Ms Yuscah Pondeca and Mr Zaeem Hadi).

Brief Bio

Dr Seemungal was born and raised in Trinidad, West Indies and then studied medicine in Cardiff. He spent three years as a specialist registrar in internal medicine and endocrinology in Oxford and then trained as a neurologist in London moving back to London initially to complete a PhD in vestibular neurosciences - 'The Mechanisms and Loci of Vestibular Perception' - at the MRC Human Movement and Balance Unit (Institute of Neurology, Queen Square, London) under Profs Adolfo Bronstein and Michael Gresty. During his PhD, Dr Seemungal acquired expertise in all elements of vestibular neuroscience and laboratory techniques, including advanced neurophysiologival techniques and non-invasive brain stimulation (with Prof John Rothwell).

Dr Seemungal was awarded a prestigious Health Foundation & Academy of Medical Sciences and Clinician Scientist Fellowship in 2008.

He enjoys teaching and training. In 2003, in his first year as a neurology trainee, he held the now historical post of Resident Medical Officer at the Hammersmith Hospital. More recently he has developed an interest in service delivery and is the Trust lead liaison for neurology for the North West London 'STP' (sustainability and transformation plan).

He relaxes by playing football and going on outdoor holidays with his family. He has been a keen photographer since childhood and enjoys the visual arts.


If you are interested in working with us, please contact Dr Seemungal.


Current funding

Keywords: Vestibular Perception, Balance, Falls, Vertigo, TBI, Stroke, Dementia, Dopamine, Brain Imaging, Brain Stimulation.


MRC Clinical Academic Research Partnership (*CARP) grant.

Dr Yen Tai, consultant neurologist and movement disorder expert at Charing Cross Hospital, has been awared an MRC CARP grant, to work with Dr Seemungal and team. We will be assaying the impact of spinal cord stimulation on balance function in Parkinson's Disease patients using direct and modelled measures of human postural control. The CARP enables "NHS consultants with a PhD ... to participate in collaborative high-quality research partnerships with established leading biomedical researchers."

Previous grant funding:

Previous funding


Brain Mechanisms and Loci of Human Vestibular Perception.

A particular theme of our research is the uncoupling of perception and reflex function in the vestibular and ocular-motor system. We have published a brain imaging study which showed that the vestibular cerebellar grey matter is key in modulating sensations of dizziness separate from vestibular ocular reflex responses. In addition, we have demonstrated an extensive white matter cortical network involved in mediating vertigo sensation. These findings in healthy humans were corroborated in a recent human lesion study in which the loci of vestibular perception were probed in acute stroke patients.

Vestibular Mechanisms in neurodegeneration

We are now extending our techniques into understanding the higher-order vestibular contributions to neurodegenerative diseases such as Parkinson's Disease and Alzheimer's Disease. For example, we have shown that the brain mechanisms underlying effects upon balance function with novel deep brain stimulation targets in Parkinson's patients, may be mediated by higher order vestibular mechanisms.



fens satellite meeting, berlin july 12th 2018.

progress in concussion research.

This meeting provided an overview of the latest research in concussion and mild traumatic brain injury. The meeting inlcuded a pre-meeting evening meeting in a typical Berlin eaterie, with local food and drink.

FENS Satellite. Berlin, Germany 2018.

FENS Satellite. Berlin, Germany 2018.


fens satellite meeting, como 3-4th july 2014.

Brain Plasticity of the vestibular and ocular motior systems.

FENS Satellite. Como, Italy 2014.

FENS Satellite. Como, Italy 2014.

This meeting focused on the brain plasticity in the vestibular and ocular motor systems. The speakers were from a variety of backgrounds including electrophysiology, pharmacology, optogenetics, computational modelling, scientific studies of human brain function as well as clinical studies. (Conference webpage).


How the brain adapts to repeated pirouetting.

Nigmatullina et al. 2015 Cerebral Cortex (Click for Open access).

We showed that the brain adaptation in dancers that enable them to suppress dizziness following a pirouette involves changes in the vestibular cerebellar grey matter. We aim to translate these findings in developing a new therapy (dance-based therapy) for chronic dizzy patients together with colleagues from Kings College London and University College London. A modified version of this therapy may be used for rehabilitating other neurological conditions such as stroke and traumatic brain injury.

A - Adaptation in the Cerebellar Grey matter mediates dizziness suppression in ballet dancers. B - The adaptation scales with ballet experience.

Experience-dependent cerebellar adaptation mediates dizziness suppression.


Yousif et al. 2016 Journal of Neuroscience (CLICK for Open access).

In this study, we address the issue of whether dopamine activation improves visual perception despite increasing sensory noise in the visual cortex. We show specifically that dopamine D1 (or combined D1/D2) receptor activation enhances the cortical signal-to-noise-ratio to boost perceptual performance. Together with the previously reported effects of dopamine upon brain plasticity and learning (Wolf et al., 2003; Hansen and Manahan-Vaughan, 2014), our results suggest that combining rehabilitation with dopamine agonists could enhance both the saliency of the training signal and the long-term effects on brain plasticity to boost rehabilitation regimens for brain injury.

Dopamine and visual perception

Dopamine and visual perception


1 supervision


Dr Yuliya Nigmatullina

Dr Shamim Quadir

NIHR Research MSc

Bill Tahtis

2 supervision

Dr Hena Ahmad

Dr Diego Kaski

Previous visiting and fixed term researchers:

Tom Cronin. Clinical Research Fellow (current - neurology academic clinical fellow Newcastle).

Hannah Streat: Visiting researcher (Engineering undergraduate, Cambridge University).

Recent Project students (including MSc & BSc)

Raymond Fu, Bilal Abou-El-Ela Bourquin, Matt Sargeant, Emiko Sykes, Joy Arthur, Crystal Yang, Jay Kotecha, Hetvi Bhatt.


Dr Anil Bharath - Imperial (BRC Stroke Project)

Ms Deborah Bull - Kings (Dance therapy study)

Prof John Golding - Univ Westminster (Dance therapy study).

Prof Danilo Mandic - Imperial (BRC Stroke Project)

Dr Luca Passamonti - Cambridge (US Military mTBI and chronic vestibular disability study)

Dr Marousa Pavlou - Kings (Dance therapy study).

Prof Simon Schultz - Imperial (Dopamine modulation of visual perceptual function)

Prof David Sharp - Imperial (MRC TBI vestibulopathy study)

Prof Jeff Staab - Mayo Clinic (US Military mTBI and chronic vestibular disability study)

Prof Dominic Straumann - ETH, Zurich (Imbalance in concussion)

Prof Mark Wilson - Imperial (MRC TBI vestibulopathy study)

Dr Eric Viirre - UCSD, San Diego (diagnosis in dizziness)


Yousif N, Fu RZ, Abou-El-Ela Bourquin B, Bhrugubanda V, Schultz SR, Seemungal BM. Dopamine Activation Preserves Visual Motion Perception Despite Noise Interference of Human V5/MT. J Neurosci. 2016 Sep 7;36(36):9303-12. [OPEN ACCESS].

Kaski D, Quadir S, Nigmatullina Y, Malhotra PA, Bronstein AM, Seemungal BM. Temporoparietal encoding of space and time during vestibular-guided orientation. Brain. 2016 Feb;139(Pt 2):392-403. [OPEN ACCESS].

Yousif N, Bhatt H, Bain PG, Nandi D, Seemungal BM. The effect of pedunculopontine nucleus deep brain stimulation on postural sway and vestibular perception. Eur J Neurol. 2016 Mar;23(3):668-70. [OPEN ACCESS]

Nigmatullina Y, Hellyer PJ, Nachev P, Sharp DJ, Seemungal BM. The neuroanatomical correlates of training-related perceptuo-reflex uncoupling in dancers. Cereb Cortex. 2015;25:554-62. [OPEN ACCESS].

Seemungal BM, Guzman-Lopez J, Arshad Q, Schultz SR, Walsh V, Yousif N. Vestibular activation differentially modulates human early visual cortex and V5/MT excitability and response entropy. Cereb Cortex. 2013 Jan;23(1):12-9. [OPEN ACCESS].

Seemungal BM. The cognitive neurology of the vestibular system. Curr Opin Neurol. 2014 Feb;27(1):125-32.

(Consensus paper) Lempert T, Olesen J, Furman J, Waterston J, Seemungal B, Carey J, Bisdorff A, Versino M, Evers S, Newman-Toker D. Vestibular migraine: diagnostic criteria. J Vestib Res. 2012;22(4):167-72. [OPEN ACCESS].



  • Online tools to help General Practitioners to manage the dizzy patient - Click Online tool.
  • Help for hospital doctors dealing with acute vertigo - WHEN DOES A PATIENT WITH ACUTE VERTIGO NEED A BRAIN SCAN?

Taken from Seemungal. Current Opinions in Neurology, 2007:

 Acute brain imaging (ideally MRI) is mandatory if there are one or more of the following in a case with acute persisting vertigo:

  1. Hyperacute onset vertigo (seconds) that persists.
  2. Acute vertigo with a normal head impulse test.
  3. Acute vertigo with new onset headache (especially occpital).
  4. Acute vertigo with any central signs, inlcuding gait or truncal ataxia.
  5. Acute vertigo and deafness without a typical Meniere's history.



Member of NHS England Strategic Clinical Network for Neurology (London) - I was involved in the neurology 'common conditions' working group (click for the report published in December 2016). The aim of this working group was to rebalance the referral pattern between the community and acute hospitals for common neurological conditions. One model involves a fully integrated service linking the community and the acute hospital. For example, for dizziness, the hospital team would train and support a community team to see the majority of dizzy patients. More complex and/or acute vertigo cases (e.g. potential strokes) would be seen by the hospital team.

Member of Association of British Neurologists Acute Neurology Advisory board.

Member of the Barany Society Vestibular Migraine Workign Group - involved in the working group that published the first classification for vestibular migraine.

Registered expert on the European Research and Innovation database.

Expert review of the United Kingdom ‘NICE’ guidelines for vertigo & dizziness.

FENS Satellite meeting - Chaired a European conference on Brain Plasticity in the Vestibular system (‘FENS’ Satellite conference – 2014).


This includes masterclasses on managing dizziness at the Royal College of Physicians, at BMJ Masterclasses in India and at the 1st and 2nd European Academy of Neurology (EAN) meetings in Berlin (2015) and Copenhagen (2016).


Participates in the Trust acute neurology rota. Provides an acute vertigo service with colleagues (Prof Adolfo Bronstein) at Imperial Healthcare NHS Trust. Together, they provide an acute vertigo service to the Trust A&E's, Hyperacute Stroke Unit at Charing Cross and the Major Trauma Unit at St Mary’s Hospital. 




Selected Publications

Journal Articles

Kaski D, Quadir S, Nigmatullina Y, et al., 2015, Temporoparietal encoding of space and time during vestibular-guided orientation, Brain, Vol:139, ISSN:0006-8950, Pages:392-403

Nigmatullina Y, Hellyer PJ, Nachev P, et al., 2013, The Neuroanatomical Correlates of Training-Related Perceptuo-Reflex Uncoupling in Dancers, Cerebral Cortex, Vol:25, Pages:554-562

Seemungal BM, Guzman-Lopez J, Arshad Q, et al., 2012, Vestibular Activation Differentially Modulates Excitability and Response Entropy in Human V5/MT and Early Visual Cortex., Cerebral Cortex, Vol:23, ISSN:1047-3211, Pages:12-19

Guzman-Lopez J, Silvanto J, Seemungal BM, 2011, Visual motion adaptation increasesthe susceptibility of area V5/MT to phosphene induction by transcranial magnetic stimulation, Clinical Neurophysiology

Seemungal BM, 2007, Neuro-otological emergencies, Current Opinion in Neurology, Vol:20, ISSN:1350-7540, Pages:32-39

More Publications